During inventory, a medical assistant in a family practice identifies a medication labeled as a Schedule II controlled substance. Which of the following actions would be most appropriate when handling this medication?
Secure the medication in a locked cabinet and maintain strict inventory records.
Store the medication under dual control with another staff member and document its use only.
Record the medication in a log book when used and leave it in a secured area accessible to all medical staff.
Place the medication on an open shelf with other prescription medications but keep an inventory list.